Cover for a packaging tray



FIG. 1 is a top front perspective view of a cover for a packaging tray showing our new design;

FIG. 2 is a top rear perspective thereof; and

FIG. 3 is a longitudinal cross-sectional view taken along line 3--3 of FIG. 1. 

The ornamental design for a cover for a packaging tray, substantially as shown and described. 